Hello, i have a fuel trim problem in my 1.8t auq.
I've done multiple tests but can't figure out if my pre cat o2 is bad or that i actually have a fuel delivery issue.
The ltft increases (after a reset) when driving normally, but i've recently did a WOT pull in 3rd gear and saw that my stft was -20%, and im currently on +13% ltft.
Here are some screenshots of some graphs, also, shouldnt the o2 go fully rich on WOT just like it goes extreme lean off throttle?
Normal driving scenario:
Hard WOT pull i did yesterday:
I've done multiple tests but can't figure out if my pre cat o2 is bad or that i actually have a fuel delivery issue.
The ltft increases (after a reset) when driving normally, but i've recently did a WOT pull in 3rd gear and saw that my stft was -20%, and im currently on +13% ltft.
Here are some screenshots of some graphs, also, shouldnt the o2 go fully rich on WOT just like it goes extreme lean off throttle?
Normal driving scenario:
Hard WOT pull i did yesterday:
